N.D. California file size limit and PDF requirements
Short answer
The U.S. District Court for the Northern District of California accepts PDF files up to 50 MB each in CM/ECF, as listed on the court’s own CM/ECF settings page. PACER recommends splitting larger documents into separate files.
Source: CM/ECF court information, Is there a limit to the size of PDF files which CM/ECF will accept?
Source checked: October 22, 2026
Requirements
Every rule N.D. California publishes that affects your PDF, with its source.
| Rule | Requirement | Source |
|---|---|---|
| Maximum file sizeRequired | 50 MB | Source [1] |
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Common rejection reasons
- Maximum file size: 50 MB. [1]
Also worth knowing
- Each federal court sets its own CM/ECF limits. Local rules can add requirements such as page size or text-searchable PDFs; check the court’s local rules and CM/ECF procedures.
Sources
- [1]CM/ECF court information
U.S. District Court, Northern District of California
Read on October 22, 2026.
Live CM/ECF settings: Maximum PDF File Size 50 MB; Maximum Merge Document Size 51 MB.
- [2]Is there a limit to the size of PDF files which CM/ECF will accept?
PACER (Administrative Office of the U.S. Courts)
Read on October 21, 2026.
Get an email if these rules change
We re-read every source at least once a week. One email when a source for N.D. California changes, nothing else.
Changelog
Added from the court’s CM/ECF settings page (Maximum PDF File Size: 50 MB).
Other United States portals
| Portal | Size limit | Page limit | Data |
|---|---|---|---|
| Superior Court of California, County of San Bernardino e-filingCalifornia, courtVerified | 25 MBper file | Verified | |
| U.S. District Court, Central District of California (CM/ECF)California, courtVerified | 100 MBper file | Verified | |
| U.S. District Court, Eastern District of California (CM/ECF)California, courtVerified | 50 MBper file | Verified | |
| eFileAZ, Arizona limited jurisdiction courts (self-represented)Arizona, courtVerified | 9.5 MBper file | Verified | |
| Findlay (Ohio) Municipal Court e-filingOhio, courtVerified | 20 MBper file | Verified | |
| Florida Courts E-Filing PortalFlorida, courtVerified | 50MBper file | Verified |